Keyboard Tester
Test if all keyboard keys are working correctly. Run the browser-based check and follow its prompts to review the result.
Keystrokes are read only while the test area is focused. Avoid typing passwords or private information.
Tool guide
About Keyboard Tester
Press keys to check which keyboard events the browser receives and see a visual indication for supported keys. The page checks input events; it cannot diagnose every physical switch or keyboard firmware issue.
How to use this tool
- 1Focus the tester area if required and press each key you want to check.
- 2Observe whether the matching key indicator changes and whether repeated presses are registered.
- 3Avoid typing passwords or private text, and use an operating-system or hardware test for deeper diagnosis.
How the tool works
The page listens for browser keyboard events and maps event codes or key names to its on-screen keyboard. Some keys are intercepted by the operating system or browser, and layouts can produce different labels for the same physical key.
Worked real-world example
A physical key can report a code such as `KeyA` while its printed character differs on another keyboard layout.
Common scenarios and use cases
Check basic key response, compare a layout, or identify which browser event is produced by a key.
Important details and limitations
This test does not measure switch force, rollover capability in every application, wireless reliability, or firmware state. Browser shortcuts may leave the page before an event is received.
Check the output unit as well as the number. If the result will be reused in another calculation, retain full precision where possible and round only at the end. For measurements governed by a technical specification, use the standard and tolerance required by that document.
Frequently asked questions
Why does a key not highlight?
The browser or operating system may reserve it, or the layout may not match the display.
Does it test key feel?
No. It only observes events delivered to the page.
Can I type a password here?
Avoid entering secrets into a tester.
About Keyboard Tester
Test if all keyboard keys are working correctly. Run the browser-based check and follow its prompts to review the result.
How to use this tool
Use the controls above to run the check. Results are measured or calculated in your browser. Some device features require browser support, a secure connection, or permission from you.